or si·li·cious

[suh-lish-uh s]

Origin of siliceous

First recorded in 1650–60, siliceous is from the Latin word siliceus of flint or limestone. See silex, -eous
Related formsnon·si·li·ceous, adjectivenon·si·li·cious, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for silicious

Historical Examples of silicious

British Dictionary definitions for silicious



  1. of, relating to, or containing abundant silicasiliceous deposits; a siliceous clay
  2. (of plants) growing in or needing soil rich in silica
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

silicious in Science


  1. Resembling or containing silica.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.